HeLa Cells are Important to Science Henrietta Lacks‚ a poor black woman in the 1950’s‚ unknowingly had samples taken from her cervical cancer specimen and changed science from that point on. Due to the continuous self-reproduction of the cells‚ HeLa cells are the most important cell line ever discovered by scientists to date! Popsci.com gave five reasons of why HeLa cells are so important to society. Popsci.com explained‚ “1. Before HeLa cells‚ scientists spent more time trying to keep cells alive
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line 4 5th rib 2 Sternum 5 Fifth intercostal space 3 Diaphragm COVERINGS OF THE HEART 5 What is the name of the covering of the heart? The heart is covered by the pericardium‚ or pericardial sac. 6 What is the function of the fibrous layer of the pericardium? The fibrous pericardium functions to protect the heart and to anchor the heart inferiorly to the pericardium and superiorly to the heart’s vessels. 7 What is the name of the inner layer of the pericardium? The inner layer of the pericardium is
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________ Name: Loren B. Matulac Date : November 09‚ 2013 Yr. & Section: IV- Perseverance Teacher: Mrs. Pacita J. Yapsangco “Magnetic Field of a Coil” Experiment 2.5 I. Objectives: To produce a strong magnetic field just by looping the wire into coils II. Materials: 6 V or 9 V batteries 50 cm of bare 12- gauge copper wire Stiff cardboard and scissors Wooden dowel (about 15 cm long x 4 cm
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Cell‚ Vol. 116‚ 281–297‚ January 23‚ 2004‚ Copyright 2004 by Cell Press MicroRNAs: Genomics‚ Biogenesis‚ Mechanism‚ and Function David P. Bartel1‚2‚* 1 Whitehead Institute for Biomedical Research 9 Cambridge Center Cambridge‚ Massachusetts 02142 2 Department of Biology Massachusetts Institute of Technology Cambridge‚ Massachusetts 02139 MicroRNAs (miRNAs) are endogenous 22فnt RNAs that can play important regulatory roles in animals and plants by targeting mRNAs for cleavage
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Ch. 1: Biology: Exploring Life 1) Slides 1 and 2: What is the main difference between physiological adaptation (as in sense‚ respond and adapt to the environment) and evolutionary adaptation? Evolutionary adaptation occurs over generations. Evolutionary adaptation does involve genetic change but it’s the change in traits as a result of genetic change that drives natural selection and evolutionary adaptation (just genetic change alone won’t drive evolutionary change). Physiological adaptation is
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DESMOSOME STRUCTURE & ITS FUNCTIONS | Bricks in a building must be stuck together and also tied somehow to the foundation. Similarly‚ cells within tissues and organs must be anchored to one another and attached to components of the extracellular matrix. Cells have developed several types of junctional complexes to serve these functions‚ and in each case‚ anchoring proteins extend
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BIO 353 Cell Biology Study Questions for Exam #3 Fall‚ 2012 Cytoskeleton “The harder the conflict‚ the more glorious the triumph.” Thomas Paine... “Unless you really just screw up.” Bush 1. What are microfilaments? (He said know how to identify/draw these) Note: since it is multiple choice‚ I doubt we will have to know how to draw them. **There are also short essay questions and‚ in past classes‚ he has asked students to draw. I thought the final was ALL MULTIPLE CHOICE???********************************
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Chapter 1 1.1 The study of Biology * Biology is the organised study of life and living things‚ and their interactions with one another and the natural environment. The importance of Biology * Biological research brought benefits to our lives and environment. a.) A better understanding of how the human body functions. b.) Finding cures for diseases. c.) Saving animal and plant species which are facing extinction. d.) A better management
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Cell Fractionation i) EQUIPMENT: Cold Liver‚ Blender‚ Gauze‚ Fridge‚ Isotonic Solution‚ Centrifuge‚ Tubes‚ Scalpel‚ HOMOGENIZATION • Take chilled liver tissue and cut into smaller pieces. • Place liver into blender with cold isotonic solution. • Blend until you have a thick soup like substance (homogenate). • Filter the mixture to remove large debris through gauze into a tube. DIFFERENTIAL CENTRIFUGATION • Attach tubes of homogenate to the refrigerated Centrifuge and turn on to spin
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and animal cells have several differences and similarities. For example‚ animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed‚ rectangular shapes. Animal Cell Plant Cell Cell wall Absent Present (formed of cellulose) Shape Round (irregular shape) Rectangular (fixed shape) Vacuole One or more small vacuoles (much smaller than plant cells). One‚ large central vacuole taking up 90% of cell volume.
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